Water oxygenation and system of aquaculture

摘要

Low pressure oxygenation of a flow of water, for example useful in providing oxygenated water in aquaculture systems for raising fish, involves providing an enclosed chamber (28) to which oxygen is supplied at atmospheric pressure and delivering a continuous flow of water into the upper region of the chamber. The water is sprayed onto a diffuser (50) which breaks up the water flow to produce a spray of droplets and foam which mix intimately with the oxygen atmosphere as the water spray drops downwards. Oxygenated water from the lower end of the chamber is delivered to a pond to supply oxygen that is usable by fish being raised in the pond.